Perrin 93+ Impreza WRX STi Drop In Filter

Don?t let a flimsy paper filter get between you and true performance.The PERRIN Performance? dual stage, ?Open Cell? foam, drop-in Panel Filter is the answer. A stealthy approach to higher air flow. Increases in horsepower are a simple easy install away! Quick cleans are simple with our aerosol cleaner and spray oil. After all, more air equals more power!